Can I revert to the old firmware version "RM510QGLHAAR11A01M4G..."

Dear Community,

When i upgrade my RM510QGL FR2 unit to a new firmware, the at+cfun=0 or at+cfun=1 return errors while i wasnt experience this when running on the built-in version (RM510QGLHAAR11A01M4G_BETA_20200801), i dont know what went wrong, the update itself or the firmware, could I revert to that old version or can someone provide me with the new firmware version with steps on how to do it properly.

Thank you in advance

You can try to upgrade the module to the latest version of firmware,please leave your email,I will send the fiemware to you.

Hi Bryan,

Thanks for getting back to me, my email is :